AccompanyCube/PopMenuUnit.cpp

//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop

#include "GlobalUnit.h"
#include "PopMenuUnit.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)

#define	POPMENU_MINWIDTH	60
#define	BREAK_HEIGHT 		5
#define CLR_DISABLE			RGB(163,153,143)

__fastcall TPopMenu::TPopMenu(TComponent* Owner)
	: TPopupMenu( Owner )
{
	m_pPicChecked = m_pPicNormal = m_pPicHover = NULL;

	OwnerDraw = TRUE;
	AutoHotkeys = maManual;

	m_pFntText = new TFont();
	m_pFntText->Name = "黑体";
	m_pFntText->Size = int(10 * 96.0 / g_yDpi + 0.5);

	m_clrNormal = RGB(60,43,23);
	m_clrHover = RGB(232,212,191);
	m_clrBreak = RGB(150,118,80);
	m_clrFrame = RGB(206,162,126);

	m_pPicNormal = new TBitmap;
	m_pPicNormal->LoadFromResourceName(int(HInstance), "MenuNormalBar");

	m_pPicHover = new TBitmap;
	m_pPicHover->LoadFromResourceName(int(HInstance), "MenuHoverBar");

	m_pPicChecked = new TBitmap;
	m_pPicChecked->LoadFromResourceName(int(HInstance), "MenuChecked");
}

__fastcall TPopMenu::~TPopMenu()
{
	if( m_pPicNormal )
		delete m_pPicNormal;
	if( m_pPicHover )
		delete m_pPicHover;
	if( m_pPicChecked )
		delete m_pPicChecked;
	if( m_pFntText )
		delete m_pFntText;

	ClearMenuItem();
}

void TPopMenu::CreateCustomMenuItem( String strCaption, TNotifyEvent aClickEvent,
										int subIndex, bool bEnabled, bool bChecked, int iTag )
{
	TMenuItem * pItem = new TMenuItem( this );
	pItem->Caption = strCaption;

	pItem->OnAdvancedDrawItem = OwnerDrawItem;
	pItem->OnMeasureItem = OwnerMeasureItem;
	pItem->OnClick = aClickEvent;
	pItem->Checked = bChecked;
	pItem->Enabled = bEnabled;

	pItem->Tag = iTag;

	if( subIndex==-1 )
		Items->Add( pItem );
	else
		Items->Items[subIndex]->Add( pItem );
}

void TPopMenu::ClearMenuItem()
{
	for( int i=Items->Count-1; i>=0; i-- ){
		Items->Delete(i);
	}
}

void __fastcall TPopMenu::OwnerDrawItem(TObject* Sender, TCanvas* ACanvas, const TRect &ARect, TOwnerDrawState State)
{
	TMenuItem *pItem = (TMenuItem*)Sender;
	TRect rectDraw(ARect.left , ARect.top, ARect.right, ARect.bottom);

	if( pItem->MenuIndex==0 ){ //第一个菜单项

		ACanvas->Pen->Color = m_clrBreak;
		ACanvas->MoveTo( ARect.left, ARect.top );
		ACanvas->LineTo( ARect.right, ARect.top );

		ACanvas->Pen->Color = m_clrFrame;
		ACanvas->MoveTo( ARect.left+1, ARect.top+1 );
		ACanvas->LineTo( ARect.right-1, ARect.top+1 );

		ACanvas->Pen->Color = m_clrBreak;
		ACanvas->MoveTo( ARect.left+2, ARect.top+2 );
		ACanvas->LineTo( ARect.right-2, ARect.top+2 );

		ACanvas->Pixels[ARect.left][ARect.top+1] = m_clrBreak;
		ACanvas->Pixels[ARect.left][ARect.top+2] = m_clrBreak;
		ACanvas->Pixels[ARect.right-1][ARect.top+1] = m_clrBreak;
		ACanvas->Pixels[ARect.right-1][ARect.top+2] = m_clrBreak;
		ACanvas->Pixels[ARect.left+1][ARect.top+2] = m_clrFrame;
		ACanvas->Pixels[ARect.right-2][ARect.top+2] = m_clrFrame;

		rectDraw.top += 3;
	}

	TMenuItem * pItemParent = pItem->Parent;
	if( pItem->MenuIndex==pItemParent->Count-1 ){  //最后一个菜单项
		ACanvas->Pen->Color = m_clrBreak;
		ACanvas->MoveTo( ARect.left, ARect.bottom-1  );
		ACanvas->LineTo( ARect.right, ARect.bottom-1 );

		ACanvas->Pen->Color = m_clrFrame;
		ACanvas->MoveTo( ARect.left+1, ARect.bottom-2  );
		ACanvas->LineTo( ARect.right-1, ARect.bottom-2 );

		ACanvas->Pen->Color = m_clrBreak;
		ACanvas->MoveTo( ARect.left+2, ARect.bottom-3  );
		ACanvas->LineTo( ARect.right-2, ARect.bottom-3 );

		ACanvas->Pixels[ARect.left][ARect.bottom-2] = m_clrBreak;
		ACanvas->Pixels[ARect.left][ARect.bottom-3] = m_clrBreak;
		ACanvas->Pixels[ARect.right-1][ARect.bottom-2] = m_clrBreak;
		ACanvas->Pixels[ARect.right-1][ARect.bottom-3] = m_clrBreak;
		ACanvas->Pixels[ARect.left+1][ARect.bottom-3] = m_clrFrame;
		ACanvas->Pixels[ARect.right-2][ARect.bottom-3] = m_clrFrame;

		rectDraw.bottom -= 3;
	}

	//绘制左边框
	ACanvas->Pen->Color = m_clrBreak;
	ACanvas->MoveTo( rectDraw.left, rectDraw.top );
	ACanvas->LineTo( rectDraw.left, rectDraw.bottom );

	ACanvas->Pen->Color = m_clrFrame;
	ACanvas->MoveTo( rectDraw.left+1, rectDraw.top );
	ACanvas->LineTo( rectDraw.left+1, rectDraw.bottom );

	ACanvas->Pen->Color = m_clrBreak;
	ACanvas->MoveTo( rectDraw.left+2, rectDraw.top );
	ACanvas->LineTo( rectDraw.left+2, rectDraw.bottom );

	rectDraw.left += 3;

	//绘制右边框
	ACanvas->Pen->Color = m_clrBreak;
	ACanvas->MoveTo( rectDraw.right-1, rectDraw.top );
	ACanvas->LineTo( rectDraw.right-1, rectDraw.bottom );

	ACanvas->Pen->Color = m_clrFrame;
	ACanvas->MoveTo( rectDraw.right-2, rectDraw.top );
	ACanvas->LineTo( rectDraw.right-2, rectDraw.bottom );

	ACanvas->Pen->Color = m_clrBreak;
	ACanvas->MoveTo( rectDraw.right-3, rectDraw.top );
	ACanvas->LineTo( rectDraw.right-3, rectDraw.bottom );

	rectDraw.right -= 3;

	//绘制背景
	if( State.Contains(odSelected) && !State.Contains(odDisabled) ){
		//高亮项
		m_pFntText->Color = m_clrHover;

		ACanvas->StretchDraw( rectDraw, m_pPicHover );
	}
	else{
		if( State.Contains(odDisabled) ){
			//禁用项
			m_pFntText->Color = CLR_DISABLE;
		}
		else{
			//常规项
			m_pFntText->Color = m_clrNormal;
		}

		ACanvas->StretchDraw( rectDraw, m_pPicNormal );
	}

	//绘制Check框
	if( State.Contains(odChecked) ){
		TRect rectCheck( rectDraw.left+4, rectDraw.top+4, rectDraw.left+20, rectDraw.top+20 );
		ACanvas->StretchDraw( rectCheck, m_pPicChecked );
	}

	//绘制伴奏类型颜色
	if( pItem->Tag>0 && (pItem->Tag & SHOW_STAGE_VAR) ){
		TRect rectVar( rectDraw.right-28, rectDraw.top+4, rectDraw.right-4, rectDraw.top+20 );

		ACanvas->Pen->Color = m_clrFrame;
		ACanvas->Brush->Color = g_clrStage[pItem->Tag & 0xFFFF];
		ACanvas->Rectangle( rectVar );
	}

	if( pItem->IsLine() ){
		ACanvas->Pen->Color = m_clrFrame;
		ACanvas->MoveTo( rectDraw.left+6, rectDraw.top+2 );
		ACanvas->LineTo( rectDraw.right-6, rectDraw.top+2 );
	}
	else{
		TFont *oldFont = ACanvas->Font;
		ACanvas->Font = m_pFntText;
		ACanvas->Brush->Style = bsClear;
		ACanvas->TextRect( ARect, rectDraw.left+24, rectDraw.top+6, pItem->Caption );   //输出菜单文字
		ACanvas->Font = oldFont;
	}
}

void __fastcall TPopMenu::OwnerMeasureItem(TObject* Sender, TCanvas* ACanvas, int &Width, int &Height)
{
	TMenuItem *pItem = (TMenuItem*)Sender;

 //	if( pItem->Tag>=0 )
		Width += 36;

 //	if( pItem->Checked )
		Width += 24;

	if( pItem->IsLine() )
		Height = BREAK_HEIGHT;
	else{
		Height = m_pPicNormal->Height;
		if( pItem->MenuIndex==0 )  //第一个菜单项
			Height += 3;

		TMenuItem * pItemParent = pItem->Parent;
		if( pItem->MenuIndex==pItemParent->Count-1) //最后一个菜单项
			Height += 3;
	}
}